As everyone can see hpwise, TBI vs. LT-1, is year dependant. Compare apples to apples. A '94 standard TBI (non-Vortec) makes 275hp, '94 LT-1 about 305hp. Post '95 both engines, hp ratings start a bump up. Actually, pretty easy to get 35hp, out of a TBI engine. There's lot to be said, about good dumb engine.
PowerSlot wise, does the large diameter propeller, give a more stable pull?
When I pulled Kyle (behind my '94 205) last year, he really worked me over. The Dude can ski!
So, it comes down to price. Would I pay extra $$ for an LT-1? No. Extra for an LT-1 and a Power-slot? Maybe. Show me maintainace records. How much more?